Model:T89C51RD2-SMSIM BRAND:Microchip description:IC MCU 8BIT 64KB FLASH 68PLCC pack:Pipe fittings SERIES:89C status:Discontinued Core processor:80C51 Core specifications:8-bit Speed:40MHz Peripherals:POR,PWM,WDT I/O number:48 Program storage capacity:64KB(64K x 8) Program memory type:Flash memory EEPROM capacity:2K x 8 RAM size:1.25K x 8 Voltage - powered by:4.5V ~ 5.5V Data converter:- Oscillator type:bosom Operating temperature:-40°C ~ 85°C(TA) Type of installation:Surface mount type Encapsulation/Shell:68-LCC(J lead) Supplier device packaging:68-PLCC(24.23x24.23)